oracle中搜集ASH报告的命令（)。

A.①-③

B.①②④

C.①③④

What can be extracted from fine-powder fly ash？

A. Aluminum, silicon, and magnetic.

B. Additive.

C. Paving material.

D. Cement.

根据以下内容回答题：

A volcanic eruption in Iceland has sent ash across northern Europe．Airlines have stopped or changed the flights across the Atlantic Ocean，leaving hundreds of passengers stuck in air-ports．

Grimsvoto is oDe of the largest and most active volcanoes in Europe．What makes Grimsvoto different is that it lies under a huge glacier(冰川)of ice up to 12 meters thick．The hot volcano heats up the ice above it，which then forms a layer of water between the glacier and the volcano．This layer of water puts pressure on the volcano，keeping it stable．As the water flows out from under the glacier，the pressure lifts．The lava(岩浆)from the volcano then comes up to the surface．This is exactly what happened today．

Now．airlines have to make changes to their flights SO as not to fly through the clouds of volcanic as．h．According to．KLM，one of Europe’s biggest airlines，airplanes cannot go under the cloud or over it．Going through the cloud can result in ash getting stuck in the airplane’s engines，causing damage to the plane．

The eruption has also caused problems for animals in Iceland．The volcano left ash and sharp，glass-like rocks all over the countryside．Farmers are keeping their animals inside to stop them from eating ash—covered grass or the sharp objects．

What makes Grimsvoto different from other volcanoes？ 查看材料

A.It is below-ice．

B.It lies under the sea．

C.It is the largest volcano．

D.Its lava affects the airlines．

船舶在海上航行中失电，若情况特殊急需用车避让，则______。

A.将情况报告轮机长，由轮机长决定

B.只要主机有可能短期运转则应执行驾驶台命令

C.停止主机运转并电告驾驶台

D.将情况报告船长，由船长决定

Before they ate the apple, Adam and Eve ______.

A．knew they were naked but didn' t feel ashamed

B．knew nothing about shame and didn' t know they were naked

C．covered their bodies with leaves and were not ashamed

D．were not ashamed because they were not naked

A、应搜集渠化河段环保现状及评价资料

B、应搜集与施工方案、施工组织有关资料

C、应搜集渠化河段沿岸城镇,工农业生产和对外交通现状及发展规划等资料

D、应搜集编制工程概算有关定额、地方材料及设备价格等资料

A.接受性学习

B.研究性学习

C.合作式学习

D.网络化学习